Dr gawad practical_git_&_nutrition
- 1. Gawad GIT & Nutrition Physiology Lecture 12 Practical Thursday, December 26, 2019 1
- 2. Experiment 1 body mass index 2
- 3. Measurement of the body weight (in Kg)
- 4. Measurement of the body height (in meters) • The person stands up with his back touching a portable or wall- mounted stadiometer with a movable head piece
- 5. Calculation of the body mass index BMI= weight (in kg)/ height squared (in meters) Kg/m2
- 6. Interpretation of the value of body mass index (BMI) • Below 18.5 , the person is underweight. • Between 18.5 and 24.9, the person has a normal (healthy) body weight. • Between 25 and 29.9, the person is overweight. • ≥ 30, the person is obese.
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- 9. BMI pitfalls • Muscular athletes may have a high BMI though they are not obese • Edema 9
- 11. Measurement of the waist circumference • Waist circumference should be measured: • 1- at the end of expiration, • 2- over minimal clothing • 3- at a level midway between the lower rib margin and the iliac crest, • 4- the tape all around the body in horizontal position.
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- 14. Measurement of the hip circumference • The hip circumference is taken: • 1- over minimal clothing, • 2- at the level of the greatest protrusion of the gluteal (buttock) muscles. • 3- The subject stands erect , with his body weight evenly distributed on both feet , and legs slightly parted (gluteal muscles should not be tense). • 4- The measuring tape should be flat, horizontal, not too tight or too loose.
- 15. Interpretation of the waist/hip circumference
- 16. Higher ratios mean…… • that the person has abdominal obesity (central obesity), which is associated with increased incidence of cardiovascular diseases and diabetes mellitus.
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- 18. Experiment 3 Measurement of the body fat (fatmeter) (Inbody) 18
- 19. Why do we measure the body fat % ? • Because the BMI is not most accurate way to determine obesity 19
- 20. The fatmeter • Measures the amounts of body fat, muscles and water.
- 21. • You enter information about your weight, height, age and sex.
- 22. • You stand on the apparatus, bare foot, with your hands holding the 2 handles.
- 23. Principle of function: Bioempedence • The fat meter passes a small, harmless, electric current through the body and measures the resistance to its passage (mainly due to presence of adipose tissue).
- 24. • The fatmeter measures the person's body fat percentage. • Also it measures body muscle mass and body composition of water and minerals
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- 26. Is all the fat in our body harmful ? • No, fat enters in the composition of some essential constituents , protects organs against mechanical trauma. • But, excess storage of fat leads to multiple diseases.
- 27. • The fatmeter measures the person's body fat percentage. • Also it measures body muscle mass and body composition of water and minerals
- 28. 28 60 %65kg man
- 29. • Proteins: – 18 % – In all tissues but specially skeletal muscles 29
- 30. • Minerals: 7 % 30
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- 32. 32 comment on age and sex (gender) ......................................... tabel 1 (body composition analysis): 1- comment on the weight 2- comment on the % of TBW, protein, fat, minreals from normal values u studied in module 3 .......................................... tabel 2 (muscle fat analysis): normally the connection between the 3 points of the three parameters must give (D shape), but if u connect them here they will give (C shape) which is abnormal ............................................ table 3: 1- comment on BMI 2- comment on WHR .......................................
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